ibus interfere with screen locker

[Michael Tsang]

When I lock the screen with ibus active, I cannot type in the password normally after locking. I have to use another terminal to kill ibus. It seems that an input method is active but I cannot see the candidates. Meta-Space also does not work. Please allow ibus to operate normally in the password box, except that the preedit string should be masked, like all password fields.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: kde-workspace-bin 4:4.11.12-0ubuntu1.1
ProcVersionSignature: Ubuntu 3.16.0-31.41-generic 3.16.7-ckt5
Uname: Linux 3.16.0-31-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.2
Architecture: amd64
CurrentDesktop: KDE
Date: Tue Mar 3 11:49:03 2015
InstallationDate: Installed on 2015-01-25 (36 days ago)
InstallationMedia: Ubuntu-Server 14.10 "Utopic Unicorn" - Release amd64 (20141022.2)
SourcePackage: kde-workspace
UpgradeStatus: No upgrade log present (probably fresh install)